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Give the 7 layers of OSI model
Physical, Data Link, Network, Transport, Session, Presentation, Application
it is responsible for transmission and reception of unstructured raw data between a device. Handles data frames received from the Data Link layer into binary data bits of 1s and 0s.
it is directly connected nodes are used to perform node-to-node data transfer where data is packaged into frames. It is also encompasses two sub-layers of its own. The first, media access control (MAC), provides flow control and multiplexing for device transmissions over a network.
it is responsible for receiving frames from the data link layer, and delivering them to their intended destinations among based on the addresses contained inside the frame.
it finds the destination by using logical addresses, such as IP (internet protocol). At this layer, routers are a crucial component used to quite literally route information where it needs to go between networks.
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It is a layer manages the delivery and error checking of data packets. This is where TCP(transmission control protocol) and UDP(user datagram protocol) takes place.
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It is controls the conversations between different computers. A session or connection between machines is set up, managed, and determined at layer 5. It is also include authentication and reconnections.
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It is a layer formats or translates data for the application layer based on the syntax or semantics that the application accepts. Because of this, it at times also called the syntax layer. This layer can also handle the encryption and decryption required by the application layer.
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At this layer, both the end user and this is the layer that interact directly with the software application.
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Give the layers of TCP/IP model
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The TCP/IP model provides a practical approach, unlike the OSI model, which is more theoretical.
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Study Notes
Physical Layer
- Responsible for transmission and reception of unstructured raw data between devices
- Handles data frames received from the Data Link layer into binary data bits of 1s and 0s
Data Link Layer
- Directly connected nodes are used to perform node-to-node data transfer where data is packaged into frames
- Encompasses two sub-layers: Media Access Control (MAC) and Logical Link Control (LLC)
- MAC provides flow control and multiplexing for device transmissions over a network
- Receives frames from the Data Link layer and delivers them to their intended destinations based on addresses contained inside the frame
Network Layer
- Finds destination using logical addresses, such as IP (Internet Protocol)
- Routers are a crucial component used to route information between networks
- Manages the delivery and error checking of data packets
- TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) take place at this layer
Transport Layer
- Controls conversations between different computers
- Sets up, manages, and determines sessions or connections between machines
- Includes authentication and reconnections
Session Layer
- Formats or translates data for the application layer based on syntax or semantics
- Also called the syntax layer
- Handles encryption and decryption required by the application layer
Presentation Layer
- Interacts directly with the software application
- Formats data for the application layer
Application Layer
- Interacts directly with the end user
- Provides services to the end user
TCP/IP Model
- A practical approach to networking, unlike the OSI model which is more theoretical
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Description
Test your knowledge on the 7 layers of the OSI model and their functions. Learn about how each layer handles data transmission, reception, framing, addressing, error checking, and more.
